/*
 * Copyright 2021 ByteDance Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package  base

type TimePredicate func(uint64) bool

type MetricEvent int8

// There are five events to record
// pass + block == Total
const (
	// sentinel rules check pass
	MetricEventPass MetricEvent = iota
	// sentinel rules check block
	MetricEventBlock

	MetricEventComplete
	// Biz error, used for circuit breaker
	MetricEventError
	// request execute rt, unit is millisecond
	MetricEventRt
	// CPU usage rate
	MetricEventCpuRate
	// hack for the number of event
	MetricEventTotal
)
